55685055 has 16 divisors (see below), whose sum is σ = 89800704. Its totient is φ = 29463840.

The previous prime is 55685051. The next prime is 55685101. The reversal of 55685055 is 55058655.

It is not a de Polignac number, because 55685055 - 2² = 55685051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55685051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12711 + ... + 16520.

It is an arithmetic number, because the mean of its divisors is an integer number (5612544).

Almost surely, 2^55685055 is an apocalyptic number.

55685055 is a deficient number, since it is larger than the sum of its proper divisors (34115649).

55685055 is a wasteful number, since it uses less digits than its factorization.

55685055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29366.

The product of its (nonzero) digits is 150000, while the sum is 39.

The square root of 55685055 is about 7462.2419553376. The cubic root of 55685055 is about 381.8676638355.

The spelling of 55685055 in words is "fifty-five million, six hundred eighty-five thousand, fifty-five".